Polishing holder



C. J. DIESEL AND W. C. JACKSON.

POLISHING HOLDER. APPLICATION FILED ocr. 20. I-sIs.

Patented Sept. 2.6, 1922 Jvea/024' Patented Sept. 25, 1922.

i Iil t? i@ QE.

Param CONRAD J. mns-nr. `ANI) WILLIAM C. JACKSON, or CINCINNATI, OHIO, essIeNoR-s To .THE ooRConAN VICTOR COMPANY, or CINCINNATI, OHIO, A CORPORATION or OHIO.

IPOLISHING HOLDER.

llqiplication `led October '20, 1919. fSeral No. 331,823.`

To all whom-Muay concern.' y

4Be it known that we, CONRAD J. DIESEL andlWILLiAM C. JACKSON, citizens ofthe United "States, and residents of lthe city of Cincinnati, in the county of Hamilton and State-'of Ohio, have'invented certain newand usefulImprovements in Polishing Holders, 'of which the following is a full, clear, and exact description, reference Vbeing had to the drawings forming a part of this specification.' I i Our invention relates to devices "for yholding an article tobe polished or otherwise buffed=or burnished, against a'rotating wheel or 'the llike, and "for vsimultaneously permitting the article itself to revolve while under the influence of the wheel.

The operation of polishing such articles as reflectors for lamps and the like is one of the most unpleasant operations in the arts because not only are there sparks, much noise and dying powder and emery, but there is required much strength to press the heavy jig or chuck against the polishing wheel, and hold it while the article is being polished.

1t is the object of our invention to provide a holder for articles to be polished in which an anti-friction bearing is provided for the chuck member, and in which the chuck and bearing are suspended adjacent the polishing machine, so that the operator may swing them into opera-tive position by pressure of his foot, thereby reducing` the back strain, and enabling him to stand further away from the buliing wheel.

These objects and other advantages to be noted we accomplish by that certain construction and arrangement of parts to be.

hereinafter more specifically pointed out and claimed.

In the drawings,

Figure 1 is a perspective View showing the complete device.

Figure 2 is a detail longitudinal section of the chuck and bearing therefor, as adapted to use with automobile lamp reflectors.

The bearing or support for the jig member may be of the desired form so as preferably to supply an anti-friction bearing.

Thus there is the bearing 1, comprising av hollow shaft, yequipped with ball bearing race-ways 2 and 3. The one end of the bearing or support is closed by a threaded cap 4, and the other end is in this instance expanded to form va guard 5 for the jig or chuck "6. The memberG is pinnedto a shaft 7, which kextends into the bearing.

Between the jig and the bearing race 3, is placed an'iinner'raceway 9, anti-friction balls '8 and, at the inner end of the shaftf, is 'another race'way and balls 10. The jig, in the form selected for illustration, is adapted to retain a lamp reflector, although this is, of course, notthe only kind of article to which our invention is adapted.

As hitherto stated, it is `our object lto suspend the parts so far described, in such ak manner that Apressure against `the lower suspending' member will 'force thesaid parts forwardr against a polishing wheel.

l/Ve do not consider it absolutely essential that the pressure be applied from below, although we considerV it desirable because the operator can use his foot to apply the desired force.

The upper suspension member comprises a rod or cable 11, provided with aA turn buckle 12, which is pivoted by means of a fork 13 to an ear 14, formed on the bearing member. The particular form of pivot is not essential nor -is the turn buckle the only mechanism adapted toy our purpose. rlhe turn buckle serves to regulate the elevation of the device and is adjustable to accommodate different heigths of polishing wheel.

The ear 14 is at the forward end of the ig bearing and the bearing is also, at its rear.

equipped with a collar 15, to which is pivoted the rod 16 of the lower mounting device.

The rod is secured to the pivoted foot guard 17 of a foot treadle 18. As a con-v venient method of securing the treadle in fixed position adjacent a polishing wheel, it is hinged as at 19 to a floor board 20, screwed to the factory floor. f

The above parts are, again, but simple illustrations of a preferred and tested form of our invention and by no means the only effective mechanism by which it could be accomplished.

When the foot treadle is depressed, the pulling downward on the rod 16 will tend to line up the two pivots which will force the bearing and jig forward and slightly up ward against a polishing wheel. Release of the foot pressure will allow the parts to swing back out of the way. y

In the device shown and now described, the operator exerts no tiresome back strain,

and has his hands free to guide the work holder without the necessity of keeping the work pressed against the polishing wheel. The whole construction is simple and strong and effectively does away with much of the difficulties of the metal polishing trade.

Having thus described our invention, what we claim as new and desire to secure by` Letters Patent is l. In combination., a work holder, ,and means for mounting the same adjacent a burnishing wheel or the like, comprising an overhead support, connected to the holder so as to permit it to swing thereon, and a treadle permanently connected to a Hoor or base, and having` a member pivotally secured to it and to the work holder at -a point out of line with the overhead support and at such an angle that a depression of the treadle will move the holder in a substantially horizontal path toward the wheel or the like.

2. In combination, a work holder, and mounting means therefor, comprising` a susw pending member secured to the work holder adjacent the portion thereof that engages the worlr, and a member secured to the holder away from the portion thereof that engages the worlgsaid member extending at an angle downwardly and forwardly toward a point below the suspending member, and means for pulling downwardly on said downwardl extendingkmember, to force the work holder forwardly.

3. A mechanism for the purpose described, comprising a hollow member, a shaft journaled ytherein,a work holding` chuck on the shaft, a suspending member secured pivotally to the hollow member adjacent the chuck. a foot treadle, and a pivotal member secured to the treadlc and the hollow member, said member extending at an angle downwardly and forwardly toward a position beneath the chuck, whereby depression of the foot treadle will force the hollow member forwardly.

CONRAD J. DIESEL. WILLIAM C; JACKSON. 

